* {
    padding: 0;
    margin: 0;
}
.section {
    position: relative;
    overflow: hidden;
}

/*第一屏*/
.first {
    padding-top: 80px;
}
.first .logo {
    width: 251px;
    height: 188px;
    margin: 0 auto;
    background-image: url(../images/logo.png);
}
.first .text {
    text-align: center;
    line-height: 1;
    margin: 85px auto;
}
.first img {
    margin: 0 24px;
    opacity: 0;
}
.first .info {
    height: 49px;
    background: url(../images/info_1.png) center center no-repeat;
}
/*动画*/
.first.current img {
    margin: 0;
    opacity: 1;
    transition: all 1s ease-out 0.3s;
}

/*第二屏*/
.second {
    padding: 0 100px;
}
.second >div {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.second .shield {
    width: 428px;
    height: 498px;
}
.second img {
    float: left;
}
.second img:nth-child(1) {
    transform: translate(35px, 78px) rotate(45deg);
}

.second img:nth-child(2) {
    transform: translate(135px, 282px) rotate(15deg);
}

.second img:nth-child(3) {
    transform: translate(187px, 62px) rotate(15deg);
}

.second img:nth-child(4) {
    transform: translate(10px, 162px) rotate(30deg);
}

.second img:nth-child(5) {
    transform: translate(465px, 522px) rotate(30deg);
}

.second img:nth-child(6) {
    transform: translate(480px, 62px) rotate(90deg);
}

.second img:nth-child(7) {
    transform: translate(180px, -305px) rotate(80deg);
}

.second img:nth-child(8) {
    transform: translate(300px, -22px) rotate(70deg);
}

.second img:nth-child(9) {
    transform: translate(280px, -322px) rotate(60deg);
}
.second .info {
    width: 635px;
    height: 309px;
    background: url(../images/info_2.png);
}
/*动画*/
.second.current img {
    transform: translate(0, 0) rotate(0deg);
    transition: all 2s ease-in-out;
}

/*第三屏*/
 .third {
    position: relative;
     padding: 0 60px;
 }
 .third > div{

     display: flex;
     justify-content: space-between;
     align-items: center;
 }
 .third .info {
     width: 631px;
     height: 278px;
     background: url(../images/info_3.png);
 }
 .third .circle {
     position: absolute;
     width: 453px;
     height: 449px;
     right: 200px;
     top:50%;
     margin-top: -225px;
     background: url(../images/circle.png);
     animation:rot 4s infinite linear;
 }
.third .rocket {
    position: absolute;
    bottom: 0;
    left: -300px;
    width: 204px;
    height: 204px;
    background: url(../images/rocket.png);

}
/*第三屏动画*/
.third.current .rocket {
    transition: all 2s ease-in-out;
    left: 68%;
    bottom: 42%;
}
@keyframes rot {
    0%{
        transform:rotate(0deg);
    }

    100%{
        transform:rotate(360deg);
    }
}

/*第四屏*/
.fourth {
    padding: 0 85px;
}

.fourth > div {
    display: flex;
    justify-content: space-between;
    align-items: center;
    overflow: hidden;
}
.fourth .search {
    width: 529px;
    height: 320px;
    position: relative;
    transform: translateX(-100%);
}
.fourth .input {
    width: 529px;
    height: 66px;
    background: url(../images/search.png);
}
.fourth .key {
    position: absolute;
    left: 20px;
    top: 24px;
    width: 0;
    height: 22px;
    background: url(../images/key.png) left center no-repeat;
}
.fourth .wrap {
    width: 529px;
    height: 393px;
    transform: translateY(-13px);
    overflow: hidden;
}
.fourth .result {
    width: 100%;
    height: 100%;
    background: url(../images/result.png) no-repeat;
    transform: translateY(-100%);
}
.fourth .info {
    width: 612px;
    height: 299px;
    background: url(../images/info_4.png);
}

/*动画*/

.fourth.current .search{
    transition:all 1s;
    transform: translateX(0px);

}
.fourth.current .key{
    transition:all 2s steps(5) 1s;
    width:99px;
}
.fourth.current .result{
    transition:all 2s 3s;
    transform: translateY(0);

}

/*第五屏*/
.fifth {
    /*padding-top: 30px;*/
}

.fifth > div {
    display: flex;
    flex-direction: column;
}

.fifth .info {
    height: 135px;
    margin: 30px 0;
    background: url(../images/info_5.png) center center no-repeat;
}

.fifth .broswer {
    width: 1004px;
    margin: 0 auto;
    flex: 1;
    background-color: rgba(255, 255, 255, 0.15);
    position: relative;
}

.fifth .toolbar {
    height: 80px;
    background: url(../images/toolbar.png) left bottom no-repeat;
    position: relative;
    opacity: 0;
}

.leftline, .topline, .rightline, .bottomline {
    position: absolute;
    border-color: rgba(255, 255, 255, 0.5);
}

.leftline {
    left: 0;
    height: 100%;
    border-left: 1px solid rgba(255, 255, 255, 0.5);
    transform: translateY(-100%);
    opacity: 0;
}

.topline {
    top: 0;
    width: 100%;
    border-top: 1px solid rgba(255, 255, 255, 0.5);
    transform: translateX(100%);
    opacity: 0;
}

.rightline {
    right: 0;
    height: 100%;
    border-right: 1px solid rgba(255, 255, 255, 0.5);
    transform: translateY(100%);
    opacity: 0;
}

.bottomline {
    bottom: 0;
    width: 100%;
    border-bottom: 1px solid rgba(255, 255, 255, 0.5);
}

.fifth .box {
    position: absolute;
    left: 70px;
    top: 32px;
    width: 0;
    /*width: 920px;*/
    height: 27px;
    overflow: hidden;
}

.fifth .box span {
    display: block;
    width: 100%;
    height: 100%;
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 3px;
    box-sizing: border-box;
}

.fifth .extra {
    position: absolute;
    right: 0;
    bottom: 0;
    width: 394px;
    height: 29px;
    background: url(../images/extra.png);
    opacity: 0;
}

.fifth .line {
    width: 100%;
    position: absolute;
    bottom: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.5);
}

/* 动画*/
/* 第一步：三条边 出现*/
.fifth.current .leftline,
.fifth.current .rightline{
    /*过渡*/
    transition:all 1s;
    transform: translateY(0);
    opacity: 1;
}

.fifth.current .topline{
    /*过渡*/
    transition:all 1s;
    transform: translateX(0);
    opacity: 1;
}

/* 第二部 工具栏 出现*/
.fifth.current .box{
    transition:all 1s 1.2s;
    width:920px;

}

.fifth.current .toolbar,
.fifth.current .extra{
    transition:all 1s 1.7s;
    opacity: 1;
}

